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    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
    <meta name="description" content="Draw a circle or extruded circle on the globe surface.">
    <meta name="cesium-sandcastle-labels" content="Development">
    <title>Cesium Demo</title>
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    <script type="text/javascript" src="../../../ThirdParty/requirejs-2.1.20/require.js"></script>
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    require.config({
        baseUrl : '../../../Source',
        waitSeconds : 60
    });
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<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
<style>
    @import url(../templates/bucket.css);
</style>
<div id="cesiumContainer" class="fullSize"></div>
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<script id="cesium_sandcastle_script">
function startup(Cesium) {
    'use strict';
//Sandcastle_Begin
// Create the viewer.
var viewer = new Cesium.Viewer('cesiumContainer');
var scene = viewer.scene;

// Example 1: Draw a red circle on the globe surface.

// Create the circle geometry.
var circleGeometry = new Cesium.CircleGeometry({
    center : Cesium.Cartesian3.fromDegrees(-95.0, 43.0),
    radius : 250000.0,
    vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT
});
// Create a geometry instance using the circle geometry
// created above. We can also specify a color attribute,
// in this case, we're creating a translucent red color.
var redCircleInstance = new Cesium.GeometryInstance({
    geometry : circleGeometry,
    attributes : {
        color : Cesium.ColorGeometryInstanceAttribute.fromColor(new Cesium.Color(1.0, 0.0, 0.0, 0.5))
    }
});
// Add the geometry instance to primitives.
scene.primitives.add(new Cesium.Primitive({
    geometryInstances: [redCircleInstance],
    appearance: new Cesium.PerInstanceColorAppearance({
        closed: true
    })
}));

// Example 2: Draw a green extruded circle.

// Create the circle geometry.  To extrude, specify the
// height of the geometry with the extrudedHeight option.
circleGeometry = new Cesium.CircleGeometry({
    center : Cesium.Cartesian3.fromDegrees(-90.0, 50.0),
    radius : 250000.0,
    extrudedHeight: 300000.0,
    vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT    });
// Create a geometry instance using the circle geometry
// created above. Set the color attribute to a
// translucent green.
var greenCircleInstance = new Cesium.GeometryInstance({
    geometry : circleGeometry,
    attributes : {
        color : Cesium.ColorGeometryInstanceAttribute.fromColor(new Cesium.Color(0.0, 1.0, 0.0, 0.5))
    }
});
// Add the geometry instance to primitives.
scene.primitives.add(new Cesium.Primitive({
    geometryInstances: [greenCircleInstance],
    appearance: new Cesium.PerInstanceColorAppearance({
        closed: true
    })
}));

// Example 3: Draw a blue circle at a height.

// Create the circle geometry.  Use the height option
// to set the circles distance from the ground.
circleGeometry = new Cesium.CircleGeometry({
    center : Cesium.Cartesian3.fromDegrees(-85.0, 40.0),
    radius : 400000.0,
    height : 150000.0,
    vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT
});
// Create a geometry instance using the circle geometry
// created above. Set the color attribute to a solid blue.
var blueCircleInstance = new Cesium.GeometryInstance({
    geometry : circleGeometry,
    attributes : {
        color : Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.BLUE)
    }
});
// Add the geometry instance to primitives.
scene.primitives.add(new Cesium.Primitive({
    geometryInstances: blueCircleInstance,
    appearance: new Cesium.PerInstanceColorAppearance({
        closed: true,
        translucent : false
    })
}));
//Sandcastle_End
    Sandcastle.finishedLoading();
}
if (typeof Cesium !== "undefined") {
    startup(Cesium);
} else if (typeof require === "function") {
    require(["Cesium"], startup);
}
</script>
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